| 摘要 |
PURPOSE:To obtain the title sintered compact with improved wear resistance by bringing a metal (alloy) containing a specified amount of another metal in the iron group into contact with a resin-derived noncrystalline carbon incorporated with each specified size of diamond powder and high-pressure phase-type boron nitride powder etc., followed by sintering under pressure at specified conditions. CONSTITUTION:Firstly, a resin-derived noncrystalline carbon is incorporated with (A) diamond powder 1-3mum in size and (B) high-pressure phase-type boron nitride powder <=3mum (in size and/or (C) diamond powder <=1mum in size. Thence, the resulting noncrystalline carbon is brought into contact with a metal (alloy) containing >=5wt.% of another metal in the iron group to effect manifestation of catalytic activity. The resulting noncrystalline carbon is then sintered at >=1250 deg.C under a pressure corresponding to the diamond-stable region in terms of thermodynamics. |
